Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
parts of the central nervous system
|
the brain and spinal cord
|
|
|
parts of peripheral nervous system
|
nerves branching beyond the spinal cord into body
|
|
|
parts of neuron
|
dendrites, cell body, an axon, and axon terminals
|
|
|
how does a neuron work?
|
a neuron transmits its impulses or messages to another neuron across the synapse by relseasing certain chemicals known as neurotransmitters
|
|
|
difference between afferent and efferent neurons
|
afferent (sensory neurons) relay messages from sense organs to brain
efferent (motor neurons) send signals from brain to glands and muscles |
|
|
somatic nervous system and what it controls
|
part of peripheral nervous system that controls voluntary activities
voluntary = lifting hand to turn a page |
|
|
autonomic nervous system and what it controls
|
part of nervous system that controls involuntary activities
involuntary = heartbeat |
|
|
3 parts of brain
|
the hindbrain
the midbrain the forebrain |
|
|
the left hemisphere and its specialty
|
controls movements on right side of body
speech is located here also specialized for mathematical ability, calculation, and logic |
|
|
right hemisphere and its specialty
|
controls left side of body
more adept at visual and spatial relations nonverbal, spatial, and holistic are on right side |
|
|
corpus callosum and split brain operations
|
cerebral hemispheres are connected by a band of fibers called corpus callosum
the two hemispheres communicate through corpus callosum, and seperating the hemispheres lessens number and severity of grand mal seizures |
|
|
what ways can you study the brain?
|
recording- EEG
stimulation lesions accidents images-CT, PET, MRI |
|
|
what is the endocrine system?
|
a chemical communication system, using hormones, by which messages are sent through the bloodstream
|
|
|
pituitary gland's function
|
center of control of the endocrine system that secretes a large # of hormones
|
|
|
thyroid gland's function
|
produces the hormone thyroxine
too much (hyperthyroidism) = lose weight, sleep, and overactive too little (hypothyroidism) = lazy and lethargic |
|
|
adrenal gland's function
|
release epinephrine and norepinephrine and becomes active when a person is angry or frightened
|
|
|
sex gland's funtion
|
testes- produce sperm and male sex hormone testosterone
ovaries- produce eggs and female hormones estrogen and progesterone |
|
|
hormones vs. neurotransmitters
|
when a chemical is used as a neurotransmitter, it is released right beside the cell that it is to excite or inhibit
whe a chemical is used as a hormone, it is released into the blood, which diffuses throughout the body |
|
|
identical twin studies (nature vs. nurture)
|
twins who were seperated at birth and reared into different environments tend to show same interests
|
